1. The main control parameters of butterfly valve are specifications and sizes.
2. Butterfly valve is a single-board air valve, which has the advantages of simple structure, convenient processing, low cost and simple operation, but poor adjustment accuracy. It is only suitable for switch or rough adjustment in ventilation and air conditioning system.
3. It can be operated manually, electrically or by pull-chain, and can be fixed at any Angle within the range of 90°.
4. Due to the single axis single valve plate, bearing force is limited, in the condition of large pressure difference, large flow rate of the valve life is short. The valve is divided into closed type and ordinary type, heat preservation and non-heat preservation.
5. Electric butterfly valve has only two position control, and electric actuator is the same as multi-blade valve.